Final answer:
The question is about a specific interstate highway shown on Ch. 7 News, but there is no provided information to identify this highway. The content given focuses on Nam June Paik's artwork and the interstate highway system's relationship to American culture and technology during its formative years.
Step-by-step explanation:
The question does not specify any particular interstate highway or location. The information provided does not include a reference to Ch. 7 News or a specific broadcast related to a highway reader board displaying Matt's description. Instead, the given details relate to the work of Nam June Paik and the concept of the interstate highway system in the context of Paik's perspective on technology and communication. Nam June Paik utilized the growing network of highways and television to create art reflecting the interconnectedness of the United States, symbolized by his piece Electronic Superhighway, which employed numerous TVs and neon lights to represent each state.
However, without additional context from the question, it is impossible to pinpoint the exact interstate roadway referenced in the Ch. 7 News broadcast.